Home / 2,457.24-3,390.12-1,408.68

Finding the Fourth Proportional to 2,457.24, 3,390.12 and 1,408.68

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Solution

The fourth proportional to 2,457.24, 3,390.12 and 1,408.68 is: 1,943.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,457.24 : 3,390.12 = 1,408.68 : x
  2. Step 2: Convert to fraction form
    2,457.24/3,390.12 = 1,408.68/x
  3. Step 3: Cross multiply
    2,457.24x = 3,390.12 × 1,408.68
  4. Step 4: Simplify right side
    2,457.24x = 4,775,594.24
  5. Step 5: Solve for x
    x = 4,775,594.24/2,457.24
  6. Step 6: Final answer
    x = 1,943.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.